28 votes51 comments · Illustrator (Desktop) Bugs » File Save, Import and Export · Flag idea as inappropriate… · Admin →
I am glad to update that this issue was fixed in 24.0 release.
Thank you for all the feedback.
An error occurred while saving the commentChris commented
same problem here, strange that no one seemed to have noted the reason yet,
this happens as the warning, when trying to write a PDF file while saving, or closing the document while saving has disappeared. so this usually happens on larger files that take quite some time to save.
means: in newer illustrator versions, to avoid this bug that causes total loss of the last version,
you have to wait until "prepare saving" and the percentage of the saving has run through the whole process, 0 - 100%, and disappears on the top of the window.
to be sure, i would even switch to desktop and your folder where the file is stored in, to check if the date of the saving was updated.
in any case, if you try to write a PDF or close the window, and the file was not entirely and completely saved in the background, you will lose your changes, only the PDF will contain that!
this is not only driving me mad, i lost many files and hours due to that, and i hope it finally will be fixed soon by adobe!